Inner wire made of 201 stainless steel with direct precision casting for consistent dimensions and corrosion resistance. The design integrates tube tire and cast inner thread as part of a compact, robust unit with a direct head. Configured with 4-point and 6-point options (G2 1/2), providing secure engagement and compatibility with standard tools. The inner wire is 201 stainless steel and produced by direct precision casting to ensure high quality and reliable performance. Tube tire and cast inner thread are integral parts of the structure, contributing to a strong, integrated assembly. Direct head features support for 4-point and 6-point configurations (G2 1/2), enabling reliable seating and easy installation or replacement. Typical use scenarios: - Replacing a worn fastener assembly in equipment that uses 4-point or 6-point direct head interfaces with G2 1/2 threads. - In assemblies that require a sturdy inner wire and threaded insert for improved alignment and load transfer. - Maintenance or repair tasks in environments where stainless steel corrosion resistance is advantageous.